package com.zlq.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zlq.reggie.common.BaseContext;
import com.zlq.reggie.common.CustomException;
import com.zlq.reggie.entity.*;
import com.zlq.reggie.mapper.OrderMapper;
import com.zlq.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {

    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    public void submit(Orders orders) {
        //当前用户
        Long userId = BaseContext.getThreadLocalId();
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);
        if (list == null || list.size() == 0){
            throw new CustomException("购物车为空，不能下单");
        }
        //用户数据
        User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook == null){
            throw new CustomException("地址信息有误");
        }
        //生成订单Id
        long orderId = IdWorker.getId();
        //购物车数据
        AtomicInteger amout = new AtomicInteger(0);
        List<OrderDetail> orderDetails = list.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amout.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return  orderDetail;
        }).collect(Collectors.toList());
        //填充订单数据
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amout.get()));
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "": addressBook.getProvinceName())
               +(addressBook.getCityName() == null ? "":addressBook.getCityName())
               +(addressBook.getDistrictName() == null ? "":addressBook.getDistrictName())
               +(addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        //保存订单数据
        this.save(orders);
        //订单明细插入
        orderDetailService.saveBatch(orderDetails);

        //清空数据库
        shoppingCartService.remove(queryWrapper);
    }
}
